Frequency-domain fourier-transform terahertz spectroscopy of the single-molecule magnet (NEt&lt;sub&gt;4&lt;/sub&gt;)[MN&lt;sub&gt;2&lt;/sub&gt;(5-Brsalen)&lt;sub&gt;2&lt;/sub&gt;(MeOH)&lt;sub&gt;2&lt;/sub&gt;Cr(CN)&lt;sub&gt;6&lt;/sub&gt;]

Dreiser, Jan; Schnegg, Alexander; Holldack, Karsten; Pedersen, Kasper S.; Schau-Magnussen, Magnus; Nehrkorn, Joscha; Tregenna-Piggott, Philip; Mutka, Hannu; Weihe, Høgni; Bendix, Jesper; Waldmann, Oliver

doi:10.1002/chem.201100581

Frequency-domain fourier-transform terahertz spectroscopy of the single-molecule magnet (NEt₄)[MN₂(5-Brsalen)₂(MeOH)₂Cr(CN)₆]

Dreiser J, Schnegg A, Holldack K, Pedersen KS, Schau-Magnussen M, Nehrkorn J, Tregenna-Piggott P, Mutka H, Weihe H, Bendix J & Waldmann O

Citation

Dreiser, J., Schnegg, A., Holldack, K., Pedersen, K. S., Schau-Magnussen, M., Nehrkorn, J., … Waldmann, O. (2011). Frequency-domain fourier-transform terahertz spectroscopy of the single-molecule magnet (NEt₄)[MN₂(5-Brsalen)₂(MeOH)₂Cr(CN)₆]. Chemistry: A European Journal, 17(27), 7492-7498. https://doi.org/10.1002/chem.201100581

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:14284

We have investigated the novel single-molecule magnet (NEt₄)[MN₂(5-Brsalen)₂(MeOH)₂Cr(CN)₆] (1; 5-Brsalen=N,N′-ethylenebis(5-bromosalicylidene)iminato anion) using spectroscopic as well as magnetization and susceptibility measurements. Frequency-domain Fourier-transform terahertz electron paramagnetic resonance (FDFT THz-EPR) based on the generation of THz radiation from a synchrotron in combination with inelastic neutron scattering (INS) allows for the discrimination between intermultiplet and intramultiplet transitions. Together with ac/dc magnetic susceptibility measurements the obtained set of data provides a complete characterization of the lowest energetic magnetic excitations. We find that the new compound 1 exhibits much weaker intermolecular interactions than found in the closely related compound: K[Mn₂(5-Brsalen)_2^-(H₂O)₂Cr(CN)₆] (2). Furthermore, two phonon lines in the vicinity of the magnetic excitations are detected.